Sentences with phrase «with satellite radar»

Now only visible with satellite radar (see an image), the channels flowed intermittently from present - day Libya and Chad to the Mediterranean Sea, says Anne Osborne, a geochemist at the University of Bristol, UK, who led the new study.

Not exact matches

If visual data from satellites is combined with information from radar and LiDAR, (light detecting and ranging, which provides laser - measured data about 3 - D contours), Xiao explains, researchers can really hone prediction of some diseases down to a tree line.

Moreover, the partnership with China will likely continue, and the two nations are considering the development of a new family of satellites using radar instead of optical instruments, enabling the observation of forests even through clouds.

«These scientists combined citizen science observations with data from radar, satellites and weather predictions to understand the cues birds use in their migrations across continents,» said Liz Blood, program director in the National Science Foundation's Division of Environmental Biology, which funded the research through NSF's MacroSystems Biology Program.

Radar satellites come equipped with an antenna that sends radio waves to Earth; after hitting the planet's surface, the signal is reflected and scattered back toward a detector that generates an image without the need for visible light.

In the early 1990s the TOPEX (Topography Experiment for Ocean Circulation) / Poseidon satellite, a joint American - French mission, shot into orbit armed with radar altimeters to measure the height of the sea surface.

One ambitious Air Force project involves a constellation of space - based radar satellites that would surround the planet, providing full coverage with the kind of granular detail thus far available only through aircraft or vehicles on the ground.

It is more sensitive than other weather radar satellites, in part because it comes equipped with a stronger transmitter and a larger antenna at 1.85 metres long.

The radar affixed to the German satellite TerraSAR - X is the first to measure velocities directly during a single overpass but with significant noise.

The break ultimately produced iceberg B - 44, visible in radar imagery captured September 23 with the European Space Agency's Sentinel - 1 satellite.

A fraction of the cost of normal radar satellites, NovaSAR could be launched in 2013 with further investment.

But a new study demonstrates how a French radar instrument on an Indian satellite could greatly enhance seamount maps, putting submariners on safer courses while helping with climate science, fisheries science, and tsunami forecasts.

Using data from Global Positioning System (GPS) stations and Interferometric Synthetic Aperture Radar (InSAR) images collected during successive satellite fly - overs, ASU researchers were able to measure changes in surface elevation during a time period spanning the main Gorkha event, and several major aftershocks, with centimeter accuracy.

Accurate tracking of lightning and thunderstorms over the oceans, too distant for land - based radar and sometimes difficult to see with satellites, will support safe navigation for aviators and mariners.

When combined with radar and other satellite data, GLM data may help forecasters anticipate severe weather and issue flood and flash flood warnings sooner.

EWeLiNE combines these data with other atmospheric observations — from ground - based weather stations, radar and satellites — and sophisticated computer models predict power generation over the next 48 hours or so.

Lapenta foresees a day in the next decade when the increasing capabilities of new radars and satellites will be coupled with an evolving generation of finely detailed weather - prediction models running in real time on computers at speeds exceeding a quintillion computations a second.

The Biomass radar will still have to be turned off when it is over North America and Europe because it will interfere with systems used by the military to track objects in space, but forests there are relatively well studied; it's the swathes of forest in the tropics, Siberia, and China that will be the new satellite's main concern.

From the Tongan island's beginning, it was tracked by monthly, high - resolution satellite observations, both with optical sensors and radar, which sees through clouds.

In an attempt to save more lives and livelihoods through improvements in forecasting extreme weather — as well to make preparations to cope with such events — the U.S. National Oceanic and Atmospheric Administration is investing in improved radar systems, more advanced computer modeling and better satellite systems.

A Soyuz rocket will launch it together with a larger Italian radar satellite into a 700 - kilometer orbit.

Measurements are made in the atmosphere, ionosphere, magnetosphere and around other planets with the help of ground - based equipment (including radar), stratospheric balloons and satellites.

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Several geographical transformations are now associated with technological advancements which make use of instruments such as satellites, radars, and others.

The journey to Tortuga Island will be on board a yacht equipped with 2 Cummins Marino 300 HP motors, radar, satellite navigation systems, VHF marine radio, clean bathrooms, and palatable drinking water.

Whether the storm was over land, ocean or coastal areas, clouds with more ice produced more lightning, researchers studying satellite radar images report in the journal Geophysical Research Letters.

The opaqueness of seawater to the passage of light or radio waves makes it difficult to efficiently study the seafloor or the deep interior of the oceans with either optical methods (cameras, etc), or with radar or microwave radiation (such as used in satellites).

The existence of such freak waves, which can reach 100 feet or more in height and can swamp a large ship in seconds, wasn't proved until 2004, when European satellites equipped with radar detected 10 of them during a three - week period.

The two satellites are in a polar orbit with an inclination of about 82 degrees and operates 3 distinct instruments: a radar altimeter; an imaging spectrometer; and an infrared radiometer.

The researchers compared the GNSS - R satellite measurements with data from other sources, including tropical cyclone best track data from the National Oceanic and Atmospheric Administration's National Centers for Environmental Information; two climate reanalysis products; and a spaceborne scatterometer, a tool that uses microwave radar to measure winds near the surface of the ocean.

Rignot and his co-authors calculated the mass of ice shelves with satellites and airplane radar readings that can penetrate ice and tell how thick it is.

The Postdoc will be responsible for preparing long - term lidar and radar measurements for use with a newly developed ground - based lidar - radar simulator for ModelE3, running ModelE3 baseline and sensitivity test simulations, preparing comparisons of aerosol and meteorological conditions with existing reanalysis and satellite data sets, and contributing to model improvement efforts that will be guided by project results.

The aquifer was discovered by analyzing data from a layering satellite, radar, and geological maps in partnership with Unesco.

Some claim that these sums pale by comparison with the aggregate global spending on climate and weather related research, which may be true if you include all the satellite programs, radar, and other ground - based sensing capabilities.

The satellite / radar image below shows the earlier mentioned microwave transmission source (southwest of Eureka) with much more clarity.

Maps - Go deep with radar, temperature, precipitation, cloud and satellite maps.

Honor Marine, Inc. (San Diego, CA) 1975 — 1982 Vice President of Operations • Led a start - up company in two years from concept to industry leader in marine electronics, serving San Diego, American Samoa, and Panama • Oversaw all technological aspects of firm operation and installation, including radar, RF / HF / VHF communications, high - power audio, satellite navigation and communication, and other various shipboard devices • Developed new interface devices to work in conjunction with installed instruments and facilitate improved efficiency